7
Connection
Examples
EDBC250SIO | 2.0
225
7.3
Two-hand Actuation
Two contact-type sensors can be connected to
four safe digital inputs.
A software module of the safety PLC provides the
analysis required for two-hand operation.
Two-hand circuit type 2
Software component " FB_TWOHAND_TYP2"
supports function "two-hand circuit type 2" in
conformity with European Standard EN 574. If S1
and S2 are set to TRUE in the correct order,
bTwoHandOut will also become TRUE. The com-
ponent also checks that both buttons have been
released before setting output bTwoHandOut to
TRUE again.
Two-hand circuit type 3
Software component " FB_TWOHAND_TYP3" supports function "two-hand circuit type 3" in
conformity with the European Standard. If S1 and S2 are set to TRUE in the correct order and
within 500 ms, bTwoHandOut will also become TRUE. The component also checks that both
buttons have been released before setting output S_TwoHandOut to TRUE again.